WO2007121700A1 - Soupape de limitation de pression à amortissement direct - Google Patents

Soupape de limitation de pression à amortissement direct Download PDF

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Publication number
WO2007121700A1
WO2007121700A1 PCT/DE2007/000581 DE2007000581W WO2007121700A1 WO 2007121700 A1 WO2007121700 A1 WO 2007121700A1 DE 2007000581 W DE2007000581 W DE 2007000581W WO 2007121700 A1 WO2007121700 A1 WO 2007121700A1
Authority
WO
WIPO (PCT)
Prior art keywords
bore
pressure relief
valve
relief valve
valve according
Prior art date
Application number
PCT/DE2007/000581
Other languages
German (de)
English (en)
Inventor
Wolfgang Voss
Original Assignee
Wolfgang Voss
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wolfgang Voss filed Critical Wolfgang Voss
Priority to AU2007241528A priority Critical patent/AU2007241528C1/en
Priority to US12/226,498 priority patent/US8191573B2/en
Priority to PL07722139T priority patent/PL2013520T3/pl
Priority to EP20070722139 priority patent/EP2013520B1/fr
Priority to AT07722139T priority patent/ATE479858T1/de
Priority to DE200750004930 priority patent/DE502007004930D1/de
Publication of WO2007121700A1 publication Critical patent/WO2007121700A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F16K17/046—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the valve being of the gate valve type or the sliding valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7834—Valve seat or external sleeve moves to open valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/785—With retarder or dashpot
    • Y10T137/7851—End of valve forms dashpot chamber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7925—Piston-type valves

Definitions

  • the invention relates to a pressure limiting valve for the protection of hydraulic units, in particular hydraulic longwall against rockfall and other sudden overload with a valve body with connection, wherein the input side and the output side of the valve housing by a displaceable against the force of a valve spring and a sealing ring exhibiting fastener with a fixed Piston and displaceable, hat-shaped valve spring plate are separated from each other and connected in overload occurring for discharging the hydraulic fluid via an inner bore in the connection and piston and radial bores and wherein between the top of the piston and the underside of the valve spring plate connected through the inner bore to the input side Damping chamber is formed.
  • Such a pressure relief valve can be found in DE 10 2004 005 745 A1.
  • Such pressure relief valves are used in particular in underground coal mining to preserve the used to protect the cavities in the longwall, but also in the track shield extension from rockfalls and other sudden overload conditions.
  • These pressure limiting valves are designed and constructed so that when a corresponding overload occurs a displaceable in a bore valve piston against the spring plate is pressed (DE 199 46 848 A1), where he moves the spring plate against the force of the valve spring with a correspondingly high overload and a Sealing ring moves over until the radial bores formed in it establish a connection between the blind bore in the valve piston and the outlet bores.
  • DE 10 2004 005 745 A1 provides a fixed piston, ie a piston connected to the connection, on which the actual valve spring plate is displaceably arranged and in the piston trained radial bores passes over or releases, so that the pressure fluid can then drain through trained in the bottom of the valve housing outlet holes.
  • a long throttle bore is formed, which acts directly on the system pressure between the piston and the valve spring plate formed damping chamber.
  • the invention is therefore based on the object used in underground mining and similar industrial sectors
  • the damping chamber is connected via a three-stage inner bore with the input side, wherein only the uppermost partial bore is designed as a throttle bore, which serves as a large volume drain hole partial bore to slightly above the radial bores and the central part of the hole to
  • Throttle bore has a reduced diameter compared to the drain hole and compared to the throttle bore has a significantly larger diameter.
  • the central partial bore is formed at the upper edge of the radial bores with a funnel-shaped approach to the drainage hole.
  • the harmful vibrations of the valve, or rather in the valve are prevented according to the invention in that the throttle bore a the vibrations of the valve or the valve spring plate preventing, but at least considerably reduced length, preferably 1/6 of the length of the central partial bore and a correspondingly reduced Diameter.
  • the throttle bore a the vibrations of the valve or the valve spring plate preventing, but at least considerably reduced length, preferably 1/6 of the length of the central partial bore and a correspondingly reduced Diameter.
  • a quick and safe outflow of pressure fluid flowing through the inner bore and the radial bores is achieved by connecting the attachment to the valve housing via a connection disk and by equipping the spring adjustment screw with a passage opening serving as a discharge bore for the outflowing pressure fluid.
  • hydraulic fluid is thus simply introduced into the valve housing, so that, first of all, a relaxation takes place in this area, without the risk of high-pressure hydraulic fluid entering the longwall.
  • the already somewhat relaxed in the valve housing hydraulic fluid now rather passes after flowing through the entire valve housing via the passage opening in the spring adjustment screw to the outside. A fast and uniform discharge is guaranteed.
  • valve housing protective cover Through opening in the spring adjusting screw is covered by a fixed at the top of the valve housing protective cover.
  • the here already relaxed pressure fluid can flow as uniformly out of the valve housing and indeed under the protective cover through, but can fully fulfill its function of covering the passage opening.
  • the actual spring adjusting screw can not be used for guiding the valve spring. Rather, it is inventively provided that the spring adjusting screw has a valve spring receiving and leading spring bore, which merges into the reduced through-hole formed. At the same time, this also creates the possibility that the pressure fluid can flow in through the spring, but also past it into the passage opening.
  • the upper part of the valve spring is guided so safe, which is additionally guided at the lower part by the corresponding bulging spring plate.
  • valve spring plate has a chamfer on the inside of its flat part. This is a kind of leadership given when pushing the valve spring plate on the fixed piston.
  • the invention provides that the piston has a free rotation at the transition to the terminal. This ensures at the same time that the hat-shaped valve spring plate can be pushed over the valve spring sufficiently far into the rest position and held there.
  • the base of the flat part is thus close to the top the connection and effective sealing of the radial bores in the fixed piston is ensured. This is particularly given when the free rotation is carried out reaching to the lower edge of the radial bores, just to achieve the safe placement of the hat-shaped valve spring plate.
  • both the terminal and the connection plate having one or with the valve housing corresponding retaining projections and retaining lugs. This gives the possibility of pushing both the connection plate as well as the connection from above into the valve housing and then set on the valve spring plate and the actual valve spring in the housing accordingly, without screwing, pinning or the like would be required.
  • the invention is characterized in particular by the fact that a pressure relief valve is created especially for use in hard coal mining and there in hydraulic longwall construction, which reacts quickly and safely when a sudden overload occurs and even when vibrations occur, usually caused by other hydraulic units , these vibrations are quickly degraded or made completely harmless, so they can not affect the interior of the pressure relief valve harmful.
  • the relatively short throttle bore at the upper part of the fixed piston and thus at the upper end of the inner bore ensures that the Pressure fluid passes sufficiently quickly through the throttle bore into the damping chamber, but ensures again a smooth retraction of the valve spring plate on the fixed piston when re-closing the valve or occurring vibrations, so that the said vibrations can not be detrimental noticeable. Due to the relatively short throttle a quick reaction to occurring vibrations is made possible.
  • the valve thus responds immediately and can fully fulfill its function, with the added that the released through the inner bore and the radial bores hydraulic fluid can be safely removed through the valve housing, then to get over the passage opening in the spring adjustment screw into the open.
  • Figure 1 is a pressure relief valve in section in the rest position
  • Figure 2 shows an enlarged representation of the connection with the piston.
  • valve 1 shows a pressure limiting valve 1 in section, wherein it is clear that in the valve housing 2, a valve spring 3 is arranged so that it holds the valve spring plate 8, which is hat-shaped, on the piston 9, which is part of the terminal 4 or fixed connected to the terminal 4.
  • Terminal 4 forms the input side 5 of the pressure relief valve 1, which is connected to the hydraulic unit, not shown here. If an overload occurs, the pressure fluid is forced up through the inner bore 14 up to the radial bores 15, 16 from the input side 5, this hydraulic fluid also simultaneously connecting the damping chamber 20 through the inner bore 14 to the system pressure or filling this damping chamber 20 , Once then the valve spring plate 8 against the pressure the valve spring 3 is raised so far that the radial bores 15, 16 are released, injects the hydraulic fluid or the hydraulic fluid into the valve housing interior 6 and is guided by this and also by the valve spring interior 7 in the direction of output side 11 and thus in the direction of spring adjustment screw 38 and discharged via the outlet opening 13 and outlet opening 40 into the environment. This outlet opening 40 or the through-opening 41 is covered by a protective cover 42 so that dirt can not get into the valve housing interior 6.
  • a leak of the pressure relief valve 1 is prevented by the inner bore 14 is sealed with the radial bores 15, 16 via a sealing ring 10, so that the hydraulic fluid can flow through the radial bore 15, 16 only if the hat-shaped valve spring plate 8 correspondingly high against the Force the valve spring 3 is moved.
  • the already mentioned damping chamber 20 is formed between the top 17 of the piston 9 and the bottom 18 of the valve spring plate 8 and that on the upper hat-shaped part of the valve spring plate 8.
  • This damping chamber 20 communicates with the top part of the bore 21 in the form of the throttle bore 22 with the central part hole 25 and then again with the drain hole 24 serving as a partial bore 23 in connection, so that the system pressure on this three-stage inner bore 14 with the damping chamber 20 is in communication.
  • the damping chamber 20 is thus always under system pressure.
  • a corresponding damping is automatically connected even when the valve response and retraction of the valve spring 3.
  • With 26 of the upper part of the damping chamber 20 is denoted, but can be dispensed with this tapered chamber approach 26 to the emergency. This is a production measure.
  • the connecting disk 32 and the terminal 4 are pushed into the empty valve housing 2 from above. These are connected to each other and with the inner wall 37 of the valve housing 2 via retaining projections 33, 34 and retaining lugs 35, 36 or are inserted into one another, that they after pushing the hat-shaped valve spring plate 8, placing the valve spring 3 and tightening the valve spring 3 via the spring adjusting screw 38 are finally set. It can also be seen in particular in FIG. 2 that the upper side 51 of the terminal 4 protrudes slightly beyond the upper side 50 of the connecting disk 32, so that the base 52 of the flat part 45 rests only on the upper side 51, which is particularly well illustrated in FIG.
  • a protective cover 42 is provided and arranged so that the pressure fluid after leaving the passage opening 41 can flow past this protective cover 42 over, without the risk that dirt particles in this way in the valve housing interior. 6 reach.
  • the spring adjusting screw 38 has the already mentioned passage opening 41, so that over this
  • the spring adjustment screw 38 itself is designed that on the underside a spring bore 43 is provided, which serves to guide the valve spring 3.
  • valve spring plate 8 When overload occurs, the pressure on the valve spring plate 8 increases because hydraulic fluid passes through the three-stage inner bore 14 into the damping chamber 20.
  • the valve spring plate 8 is raised against the force of the valve spring 3 in the direction of the spring adjusting screw 38, so that it occupies the position shown on the left in Figure 1, in which now the radial bores 15, 16 are free.
  • the pending pressure fluid via the partial bore 23 and the radial bores 15, 16 flows out into the valve housing interior 6 and from there from the pressure relief valve 1 and through the outlet opening 40 and the passage opening 41.
  • the damping chamber 20 is after before with the system pressure, so the incoming pressure fluid in conjunction and is therefore filled with hydraulic fluid.
  • valve spring 3 tries to push the valve spring plate 8 back to the starting position, as shown on the right in Figures 1 and 2. Due to the filled damping chamber 20, this is not readily possible, but rather only by displacing the hydraulic fluid, which is present in the damping chamber 20. A direct drain is not possible because the upper end, ie the top part of the hole has the construction of a throttle bore and the effect of a throttle bore 22. This means that the pressure fluid in the damping chamber 20 can flow only limited, so that accordingly also the valve spring plate 8 drops slowly and the valve spring 30 can relax only slightly and evenly. Swinging is then not possible for the valve spring plate 8 or the valve spring 3. This applies to the entire sales channel of the hydraulic fluid, which must be removed from the damping chamber 20 via the throttle bore 22 to allow a return of the valve spring plate 8 in the right in Figure 1 and 2 reproduced position.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Springs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

Pour protéger des appareils hydrauliques, notamment le soutènement hydraulique dans l'exploitation houillère, on utilise des soupapes de limitation de pression (1) dont la chambre d'amortissement (20) est placée, conçue et reliée au côté entrée (5) de sorte qu'il règne toujours une pression système dans la chambre d'amortissement (20) et que, en cas de décharge de la soupape de limitation de pression (1), le fluide de pression ne puisse s'écouler que de manière limitée afin d'empêcher l'apparition de vibrations aux effets négatifs.
PCT/DE2007/000581 2006-04-21 2007-03-30 Soupape de limitation de pression à amortissement direct WO2007121700A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2007241528A AU2007241528C1 (en) 2006-04-21 2007-03-30 Pressure regulating valve with a direct damping action
US12/226,498 US8191573B2 (en) 2006-04-21 2007-03-30 Pressure regulating valve with a direct damping action
PL07722139T PL2013520T3 (pl) 2006-04-21 2007-03-30 Zawór ograniczający ciśnienie z bezpośrednim tłumieniem
EP20070722139 EP2013520B1 (fr) 2006-04-21 2007-03-30 Soupape de limitation de pression a amortissement direct
AT07722139T ATE479858T1 (de) 2006-04-21 2007-03-30 Druckbegrenzungsventil mit direkter dämpfung
DE200750004930 DE502007004930D1 (de) 2006-04-21 2007-03-30 Druckbegrenzungsventil mit direkter dämpfung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006018542.0 2006-04-21
DE102006018542A DE102006018542A1 (de) 2006-04-21 2006-04-21 Druckbegrenzungsventil mit direkter Dämpfung

Publications (1)

Publication Number Publication Date
WO2007121700A1 true WO2007121700A1 (fr) 2007-11-01

Family

ID=38220016

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/000581 WO2007121700A1 (fr) 2006-04-21 2007-03-30 Soupape de limitation de pression à amortissement direct

Country Status (7)

Country Link
US (1) US8191573B2 (fr)
EP (1) EP2013520B1 (fr)
AT (1) ATE479858T1 (fr)
AU (1) AU2007241528C1 (fr)
DE (2) DE102006018542A1 (fr)
PL (1) PL2013520T3 (fr)
WO (1) WO2007121700A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697454A (zh) * 2014-11-27 2016-06-22 无锡市海骏液压机电设备有限公司 泄压调节式液压缸测压装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9518670B2 (en) * 2013-03-15 2016-12-13 David E Albrecht Main stage in-line pressure control cartridge with stepped retainer collar
US9091355B2 (en) * 2013-03-15 2015-07-28 David Albrecht Main stage in-line pressure control cartridge with optional reverse flow function
CN105697457A (zh) * 2014-11-27 2016-06-22 无锡市海骏液压机电设备有限公司 泄压式液压缸测压指示装置
CA2989323A1 (fr) * 2015-06-14 2016-12-22 David E. Albrecht Cartouche de regulation de pression en ligne d'etage principal ayant un collier de retenue etage
US11118698B2 (en) 2018-07-23 2021-09-14 Pratt & Whiiney Canada Corp. Damping mechanism for valves

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344806A (en) * 1966-09-27 1967-10-03 Midland Ross Corp Check valve
US4699171A (en) * 1986-12-19 1987-10-13 Sundstrand Corporation Multiple port relief valve
DE19946848A1 (de) 1999-09-30 2001-04-05 Vos Richard Grubenausbau Gmbh Druckbegrenzungsventil mit Dämpfung
DE102004005745A1 (de) 2004-02-05 2005-08-25 Voß, Christina Druckbegrenzungsventil mit direkter hydraulischer Dämpfung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627312A (en) * 1925-12-19 1927-05-03 Blust Christian Automatic safety cut-off for gas valves
US2069022A (en) * 1932-08-26 1937-01-26 Martin A Sisk Automatic valve
US2028756A (en) * 1934-10-18 1936-01-28 John D Crecca Breather valve
US2655173A (en) * 1949-10-08 1953-10-13 Parker Appliance Co Piston actuated sleeve type relief valve
US4766929A (en) * 1986-03-24 1988-08-30 Durabla Manufacturing Co. Check valve
US4901757A (en) * 1989-01-23 1990-02-20 Clark Jr Robert W One way valve
US5201491A (en) * 1992-02-21 1993-04-13 Texaco Inc. Adjustable well choke mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344806A (en) * 1966-09-27 1967-10-03 Midland Ross Corp Check valve
US4699171A (en) * 1986-12-19 1987-10-13 Sundstrand Corporation Multiple port relief valve
DE19946848A1 (de) 1999-09-30 2001-04-05 Vos Richard Grubenausbau Gmbh Druckbegrenzungsventil mit Dämpfung
DE102004005745A1 (de) 2004-02-05 2005-08-25 Voß, Christina Druckbegrenzungsventil mit direkter hydraulischer Dämpfung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697454A (zh) * 2014-11-27 2016-06-22 无锡市海骏液压机电设备有限公司 泄压调节式液压缸测压装置

Also Published As

Publication number Publication date
ATE479858T1 (de) 2010-09-15
EP2013520A1 (fr) 2009-01-14
US20090199912A1 (en) 2009-08-13
AU2007241528A1 (en) 2007-11-01
EP2013520B1 (fr) 2010-09-01
DE102006018542A1 (de) 2007-10-25
DE502007004930D1 (de) 2010-10-14
AU2007241528B2 (en) 2011-06-30
PL2013520T3 (pl) 2011-03-31
US8191573B2 (en) 2012-06-05
AU2007241528C1 (en) 2011-12-15

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